Antonyms of adj low-toned

1 sense of low-toned

Sense 1
low, low-toned -- (very low in volume; "a low murmur"; "the low-toned murmur of the surf")

INDIRECT (VIA soft) -> loud -- (characterized by or producing sound of great volume or intensity; "a group of loud children"; "loud thunder"; "her voice was too loud"; "loud trombones")

Similarity of adj low-toned

1 sense of low-toned

Sense 1
low, low-toned -- (very low in volume; "a low murmur"; "the low-toned murmur of the surf")
       => soft (vs. loud) -- ((of sound) relatively low in volume; "soft voices"; "soft music")